Universal-bar mechanism.



0. PETERMANN.

- UNIVERSAL BAR MECHANISM. APPLICATION mzo um. I]. I9H- nun/co 05c. 20. 1915.

1 1 89, 1 69. Patentedllune 27, 1916.

2 SHEETSSHEET mumnuuulllmk "WE/{T08 Olio eter-mannl T T ORNE Y8 0. PETERMANN.

UNIVERSAL BAR mscmmsm. APPLICATION FILED IAN. lLJSH- RENEWED DEC- 20. I915. 1 ,189,169, Patented June 27, 1916.

2 SHEETS-SHEET 2- k w/mssm INVEN TOR 0w PcZcr/mmn V I BY A TTORNEYS UNITED OFFICE.

OTTO PETERMANN, OF GROTON, NEW YORK. ASSIGNOR TO CORONA TYPEWRITER COMPANY, INCORPORATED, A CORPORATION OF NEW YORK.

UNIVERSAL-BAR MECHANISM.

Specification of Letters Patent.

Patented June 27,1916.

Application filed January 17. 1911 Serial No. 603,122. Renewed December 20 1915. Serial No. 67,949.

To all whom it way ('om'r'rn Be it known that I, O'r'ro Pn'rnmusx, a citizen of the Republic of Switzerland, and. a resident of Groten, county of Tompkins, and State of New York. have invented certain new and useful Improvements in Universal-Bar Meclmnisms, of which the .following is a full, clear, and exact description.

This invention relates more particularly to a universal bar guide frame adapted for use in connection with a foldable frontstrike typewriting machine.

One of the main objects of the invention is to provide simple means whereby the universal bar and parts operated thereby may be uniformly and properly supported so that it may move freely and at the same time remain in a substantially horizontal position over the key-levers without liability of tilting or canting no matter which key-lever is operated.

Other objects of the invention are to provide simple means to vary the pressure of the universal bar against the key-lever and thereby vary the touch of the machine; and to provide simple means for mounting the space-bar levers to adapt the sanu to operate the universal bar for letter spacing.

A, further object of the invention is to provide simple means for connecting the universal bar to a fixed part of the machine frame, and which parts are so constructed that they may be readily made and assembled.

VVith these and other objects in view, the invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification. and will then be pointed out in the claims at the end of the description.

In the drawings. Figure 1 is a longitudinal section, partly in elevation, of one form of machine embodying my invention; and Fig. 2 is a 1')ers ')eetive view, partly diagrammatic, showing the construction and operation of the several parts embodying my invention.

The frame 10 has a support 11 vertically movable therewith, and mounted on said support is a *arriage 12 and a platen 13. The carriage 13 may have a rack-bar 14 adapted to be engaged by dogs carried by a movable arm 15 of an escapen'ient mechanism in the usual way, and adapted to engage the arm 15 is a part 16 of a rocking frame 17. This rocking frame 17 coniprises two vertirally-extendingfarms 18 the upper part of'which is connected by a transverse bar It which is integral with the arms 18. The upper ends of the arms 18 are slottedfas at 20. aml engaging said slots is an angular portion 21 of bell-crank levers There are two bell-crank levers located at opposite sides of themachine, and these hell-crank lovers are pivoted at 23 to a part of the machine frame and at their outer ends are pivotally held at 24 to upright parts 23 of a universal bar 2b. The universal bar it rests upon the key-levers [I and said key-levers may be suspended in groups from a plurality of transversely-extending rods :28, there being a rod for each group and each key-lever may be connected by a spring 2%) to a transversely-extending bar 30. The platen carriage and support may be vertically adjustable by suit-able platen shift mechanism, a part of which is shown by a lever 31 which is connected at one end to a transversely-extending rod about which the frame 17 rocks and by which the said rocking frame as well as the support 11 may be elevated. The support 12 may be foldahle to adapt the platen and carriage to be folded over the keyboard, although the invention is applicable to other types of machines.

A rod 233 extends transversely of the machine and held to this rod are the forward ends of the arms 3%. These arms extend lengthwise of the machines above the key-levers and have their inner ends extending downward and pivotally held at 35 to the parts 25 of the universal bar 26. These arms 34 and the rod 33 form a guide frame for the universal bar and owing to the parallel relation of the rod 33 and the universal bar and the positive connection between the universal bar and the arms 34, the universal bar will be positively moved the same extent throughout its entire length, and such movement will be uniform as to the universal bar, the bell-crank levers 22, and the entire rocking frame 17 thereby avoiding any binding or canti'ng action Whatever upon these parts.

To hold the universal bar against the inner ends of the key-levers, I provide a spring 36. This spring is connected at one end to an arm or bracket 37 projecting outward from one of the. arms 34, and said bracket may be integral with the arm 34 or may be secured thereto by a screw 38. The lower end of the spring is held to a plate 39 which is secured by screws 40 to the frame flange 41. This plate .39 has a plurality of openings 40 one of which may be engaged by the lower end of the spring 36, the said lower end being hooked to be readily detached, and by positioning the plate 39 so that some of the openings will be nearer the bracket 37 than others, the tension of the spring 36 may be varied and consequently the pressure of the universal bar on the key-levers also varied. By varying the downward pressure of the universal bar, the touch may be varied and other means usually employed for providing tension may be dispensed with.

The space-bar levers 42 may have bearing portions 43 having openings through which one of the rods for supporting the key-levers passes, and said space-bar levers are connected to the spacing bar 44 at the front of the machine or formed integral therewith as preferred. The inner end of the space-bar levers 42 extend upward as at 45 and have inturned ends forming toes 46. These toes are engaged by screws 47 which are adjustable in lugs 48 formed on the guide frame arms 34, a lock nut 49 being provided to hold the screws in an adjusted position. Each space-bar lever has a part 50 on the under edge thereof which is adapted to bear against the transverse rod 51, the latter forming a stop for the space-bar levers 42. The space-bar levers each have springs 52 tending normally to force the bearing parts 50 against the transverse rod 51. By this means the fulcrum for the space-bar levers may be the same as the outer key-lever fulcrum rod 28, and by constructing and mounting the space-bar levers in' the manner shown, the necessary depression of the space bar 44 is very much shortened. The universal bar in this case is acted upon by the space-bar levers by reason of the engagemen of the toes 46 with the screws 47 carried by the arms 34, though instead of the screws and the lugs on the guide frame arms 34, these parts may be dispensed with and the ends of the space bar levers 42 made to engage directly against said arms 34.

From the foregoing, it will be seen that simple and eflicient means is provided whereby the universal bar and rock frame may have a uniform and positive movement no matter what key-lever is operated; that said universal bar guide frame is positive in its connection and operation; that simple means is provided whereby the universal bar may have its pressure on the keylevers varied; that simple means is provided for mounting the space-bar levers and causing the same to operate the universal bar; and that the parts are simple in construction and may be readily made and assembled.

Ha ing thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a tvpewriting machine, the combination of a rocking frame having upright arms and a transversely-extending bar portion and forming a part of the feed mechanism, the said bar being adapted to actuate the dogs of the escapement mechanism and said arms having vertically arranged slots therein, bell-crank levers pivotally held adjacent to the arms and having integral projections entering said slots in the arms, a universal arm having. integral arms extending upwardly and pivotally held to one of the arms of each of the bell-crank levers, key-levers having their ends located adjacent to the universal bar and under the same and adapted to actuate said universal bar when depressed, and means for positively guiding the universal bar on opposite sides of the machine.

2. In a typewriting machine, the combination of a rocking frame having upright arms and a transversely-extending bar portion, the said bar being adapted to actuate a part of the escapement mechanism, bellcrank levers pivotally held adjacent to the arms and having means to engage said arms, a universal *bar having integral arms extending upwardly and pivotally held to one of the arms of each of the bell-crank levers, key-levers having their ends located adjacent to the universal bar and adapted to actuate said universal bar when depressed, and means for positively guiding the universal bar on opposite sides of the machine.

3. In a typewriting machine, the combination of a plurality of supports, key-levers suspended from said supports and having their inner ends lying substantially in a horizontal plane, a universal bar located directly over the key-levers and adapted to be actuated thereby when depressed, arms pivotally held to the universal bar, said arms extending lengthwise of the machine on opposite sides thereof and having a substan tially curved and downwardly extending body portion, a transversely-extending rod to which the ends of the arms are held to adapt the arms to move in unison, said rod being located above the key-levers and in substantial alinement with the key-lever supports and in substantially parallel relation to the universal bar and adapted to cause the universal bar 'to have an evenmovement when actuated by any one of the key-levers, and means tending normally to hold the key-levers against depression.

4. In a typewriting machine, the combinallOll of a support, lrey-levers held on said support, a universal bar located directly over the key-levers and adapted to be actuated thereby when depressed, arms pivotally held to the universal bar, said arms extending lengthwise of the machine on. opposite sides thereof and having a substantially curved and downwardly extending body portion, and a transversely-extending rod to which the ends of the arms are held to adapt the arms to move in unison, said rod being 10- rated above the key levers and in substantially parallel relation to tlienniversal bar aud adapted'to cause the universal bar to have an even movement when actuated by any one of the key-levers.

5. In a t v])ewriting machine, the combination of a support,hey-levers held on said support, a universal bar located over the keylevers and adapted to be actuated thereby when depressed, arms pivotally held to the universal bar, said arms extending lengthwise of the machine on opposite sides thereof and a transverselyextending rod to which the ends of the arms are held to adapt the arms to move in unison.

(3. In a typewriting machine, the combination of a support, key-levers held to said support, a universal bar having a straight body and located over the key-levers and adapted to be actuated thereby when depressed, and arms pivotally held to the universal bar, said arms extending lengthwise of the machine on opposite sides thereof.

7. In a typewriting machine, the combination of a plurality of supports, key-levers suspended from said supports, a universal bar located directly over the key-levers and ulapted to be actuated thereby when depressed. arms pivotally held to the universal bar, said arms extending lengthwise of the machine on opposite sides thereof and having a substantially curved and downwardly extending body portion, and a transverselyextending rod to which the ends of the arms ,a re held to adapt the arms to move in unison.

S. In a typewriting machine, the combination of a universal bar, a guide frame having arms connected at their ends to said bar, and space levers having their ends adapted to actuate the guide frame and through it the universal bar.

9. In a typewriting-machine, the combination of a' rocking frame having upright arms and an integral transversely-extending bar portion and forming a part of the feed mechanism, the said bar being adapted to actuate the dogs of the escapement mechanism and said arms having vertically arranged slots therein, bell-crank levers pivotally held adjacent to the arms and having means to engage said slots in the arms, a universal bar having integral arms extending upwardly and pivotally 'held to one of the arms of each of the bell-crank levers, and key-levers having their ends located adjacent to the universal bar and under the same and adapted toactiiate said universal bar whendepressed.

1.0. Ina typewriting machine, the combination of a rocking frame having upright arins'and a transversely-extending bar portion, the said bar being adapted to actuate a part of the escapement mechanism, bellcrank levers pivotally held adjacent to the arms and having means to engage said arms, a universal bar having integral arms extending upwardly and pivotally held to one of the arms of ea'ch of the bell-crank levers, and key-levers having their ends located adjacent to the universal bar and adapted to actuate said universal bar when depressed.

, 11. In a typewriting machine, the combination with a universal bar, of key-levers for actuating the universal bar, a guide frame for the universal bar, a tension spring held at one end to the guide frame, and. a plate mounted on the frame having a plurality of openings for attachment of the other end of said spring.

12. In a typewriting machine, the combination with a universal'bar, of key-levers for actuating the universal bar, a guide frame for the universal bar, a tension spring held at one end to the guide frame and its other end to a fixed part of the machine frame, and means for varying the tension of said spring.

13. In a typewriting machine, the combination with a universal bar, of a guide frame connected to said bar, a bracket mounted on a part of the guide frame, a spring secured at one end to the bracket, a fixed plate to which the other end of the spring is secured, said spring tending to force the universal bar against the keylevers, and means whereby the spring may be adjusted to vary the tension.

. 14. In a typewriting machine, the combination with a universal bar forming a part of a feed mechanism, of a transversely-extending rod, key-levers mounted upon said rod, space-bar levers pivotally supported on said transversely-extending rod and having upturned inner ends, a guide frame having arms pivotally lieldto the universal bar'at oppositesides of the machine and each arm having lugs, and screws adjustably held in said lugs and adapted to engage the ends of" the space-levers.

15. In a typewriting machine, the combination with a universal bar forming a partof a feed mechanism, of a transversely-extending rod, key-levers mounted uponsaid rod, a second transversely-extending rod located under the key-levers, space-bar levers pivotally supported on the first-mentioned transversely-extending rod and having upturned inner ends and parts to bear on the second rod, a guide frame held to the universal bar at opposite sides of the ma- (rh i'lez; 51ndrneans whereby the space-levers rig-nine; are guide frame;

:space bar levers pived awingl luptur'ned' inner @QppbSitQ sides,- of the mang-lugs projecting outward -screws hel d in said lugs and gly'rfegainsb' the space-bar levers.

;. U ijthi s'aluniversaL-bar, of a transversel extending md, key-levers mounted ersal balyofa trans- ,said Ptre'nsverseIy-ex- .typevs'r r iting machine; the oombiupen said rod; a second transversely-eigr tending rod, space-bar levers pivobally sup ported on-said first-mentioned transverselyextending rod and having upturned inner ends and ortions to bear against the second 20 rod, 3, guide 'framedirectlyengeged by the upturned ends of the s ape-bar levers, and a spring connected-0- eiguide frame and to a fixed part of the m'achineframe. i

This. specification signed and witnessed 25 this (ifihday of Januar A. D. 19 1 1.. V OTTO 'PETERMANN.. lvitnesseszj'" A..T vnrR, J r5, C. BARTELS, 

